These shirts are cut and sized for athletic, medium to larger build individuals. They tend to run on the larger side. The shirts also have 4-way stretch common in these type of shirts. Remember this is made to be worn as a base layer that will have a fitted feel. They have a lot of stretch. They are not compression shirts that will leave you feeling tightly squeezed. 

If you are between sizes or are having a hard time deciding on two sizes, I recommend going with the smaller size. **XL Shirts are sold out.**